如何从java.sql.Timestamp中检索毫秒数

Question

我有一个时间戳对象，需要从它获得毫秒，有人可以帮我一个示例代码片段吗？

Answer 1

You can use Timestamp.getTime()

Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Timestamp object.

Example:

long timeInMilliSeconds = t.getTime();
// do magic trick here

Note: Timestamp is extend from Date .

Answer 2

You can just call getTime() to get milliseconds since the Unix epoch. Is that what you were after, or did you want "milliseconds within the second" or something similar?

Note that using just milliseconds is slightly odd for a Timestamp , given that it's designed specifically to be precise to the nanosecond. So you should usually be using getTime() in conjunction with getNanos() .

Answer 3

From the Java Docu ( link ):

public long getTime()

Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Timestamp object.

Answer 4

I guess this will give the output you want.

public void timeInMills(Timestamp t){
    System.out.println("Time in Milli second "+t.getTime());

}